108029021 has 8 divisors (see below), whose sum is σ = 109134264. Its totient is φ = 106928640.

The previous prime is 108028981. The next prime is 108029083. The reversal of 108029021 is 120920801.

It can be written as a sum of positive squares in 4 ways, for example, as 5736025 + 102292996 = 2395^2 + 10114^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108029021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108020021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56741 + ... + 58613.

It is an arithmetic number, because the mean of its divisors is an integer number (13641783).

Almost surely, 2^108029021 is an apocalyptic number.

It is an amenable number.

108029021 is a deficient number, since it is larger than the sum of its proper divisors (1105243).

108029021 is a wasteful number, since it uses less digits than its factorization.

108029021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 108029021 is about 10393.7010251402. The cubic root of 108029021 is about 476.2629672943.

Adding to 108029021 its reverse (120920801), we get a palindrome (228949822).

The spelling of 108029021 in words is "one hundred eight million, twenty-nine thousand, twenty-one".